Axis module and motor device and pump device using same

Abstract

An axis module is used for solving the problem that the bonding strength of an existing axis module and a base is insufficient. Comprising an axis; the axis seat is provided with an upper surface and a lower surface; the axis base is provided with a protruding structure protruding away from the upper surface from the lower surface. The axle center is fixedly arranged on the axle center seat, or the axle center and the axle center seat are integrally formed; the protruding structure of the axis base is used for being embedded into a base so that the axis module can be fixedly arranged on the base. The utility model further provides a motor device and a pump device with the axis module. According to the utility model, the effect of improving the bonding strength of the axis module and the base can be achieved.

Description

Technical Field

[0001] The utility model relates to an axis structure, in particular to an axis module, a motor device and a pump device having the axis module. Background Art

[0002] As Figures 1 to 2 shown, the existing axis module can be applied to structures and uses such as bearings, motors or pumps (which may also include fans), etc. The axis module at least has an axis 91, an axis seat 92 and a base 93. During the assembly process, the axis 91 is first fixed in the annular hole of the axis seat 92, and then together with the axis seat 92 is fixed to the base 93. In particular, as the size of the axis module is reduced, usually by means of resistance welding, the planes of the axis seat 92 and the base 93 in contact with each other are fused and fixed. However, since the contact surfaces between the axis seat 92 and the base 93 are flat planes, the fixing strength of the resistance welding is likely to be insufficient.

[0003] In view of this, it is indeed necessary to improve the existing axis module. Summary of the Utility Model

[0004] To solve the above problems, the purpose of the utility model is to provide an axis module, which can improve the fixing strength of the axis seat of the axis module combined with the base.

[0005] Another purpose of the utility model is to provide a motor device, which can achieve the purpose of the above axis module.

[0006] Another purpose of the utility model is to provide a pump device, which can achieve the purpose of the above axis module.

[0007] All directional terms or their approximate terms described throughout the text of the utility model, such as "front", "rear", "left", "right", "up (top)", "down (bottom)", "inside", "outside", "side", "end", "axial direction" and "radial direction", etc., mainly refer to the directions of the attached drawings. Each directional term or its approximate term is only used to assist in explaining and understanding the embodiments of the utility model, and is not used to limit the utility model.

[0008] The quantifiers "a" or "one" used for the elements and components described throughout the text of the utility model are only for convenience of use and provide the general meaning of the scope of the utility model; in the utility model, it should be interpreted as including one or at least one, and the single concept also includes the case of multiple, unless it clearly means otherwise.

[0009] As used throughout the present utility model, approximate terms such as "combination", "assembly", "installation", and "arrangement" mainly include forms where components can be separated without being damaged after connection, or forms where components cannot be separated after connection. Those skilled in the art can select according to the material of the components to be connected or the assembly requirements.

[0010] The shaft module of the present utility model includes: a shaft; a shaft seat having an upper surface and a lower surface; the shaft seat has a protruding structure protruding from the lower surface away from the upper surface; the shaft is fixedly provided on the shaft seat, or the shaft and the shaft seat are integrally formed; the protruding structure of the shaft seat is used to embed into a base, so that the shaft module is fixedly provided on the base.

[0011] Therefore, for the shaft module of the present utility model, by embedding the protruding structure of the shaft seat into the base, the anti-torsion ability and stability of the combination between the shaft seat and the base can be improved, thereby achieving the effect of improving the fixing strength of the shaft.

[0012] Among them, the protruding structure of the shaft seat is embedded into the base by using the method of resistance welding. In this way, by using the method of resistance welding and through the configuration that the shaft seat has the protruding structure, the effect of current transmission and heating during resistance welding can be improved, so that the protruding structure can be quickly embedded into the base to improve the efficiency of forming a fixed connection between the shaft seat and the base. In addition, compared with the existing plane combination between the shaft seat and the base, the protruding structure increases the combination area between the shaft seat and the base, so as to improve the anti-torsion ability and stability of the combination between the shaft seat and the base, thereby achieving the effect of improving the fixing strength of the shaft.

[0013] Among them, the melting point temperature of the shaft seat is higher than that of the base. In this way, the protruding structure of the shaft seat can be easily embedded into the base, achieving the effect of improving the fixing strength of the shaft seat and the shaft.

[0014] Among them, the base is made of copper or aluminum. In this way, the material of the base is easy to obtain, with the effect of cost saving.

[0015] Among them, the number of the protruding structures is at least two, and they are respectively arranged at different radial positions on the circumferential direction of the lower surface. In this way, through multiple protruding structures, the anti-torsion ability and stability of the combination between the shaft seat and the base can be strengthened, thereby achieving the effect of improving the fixing strength of the shaft.

[0016] Among them, the protruding structure is in a ring shape; the ring is formed by a single protruding structure or by a plurality of separated protruding structures. In this way, in the case where the ring is formed by a single protruding structure, it has the effect of being easy to manufacture; in the case where the ring is formed by a plurality of separated protruding structures, the initial contact area between the ring formed by the plurality of protruding structures and the base is smaller than the initial contact area between the ring formed by a single protruding structure and the base, and it has the effect of being easy to embed into the base.

[0017] Among them, the cross-section of the protruding structure is triangular, arc-shaped or rectangular. In this way, through the configuration of the protruding structure protruding from the lower surface of the shaft center seat, various cross-sectional shapes of the protruding structure can improve the anti-torsion ability and stability of the combination between the shaft center seat and the base, and further achieve the effect of improving the fixing strength of the shaft center. In addition, the shape of the above cross-section can make the protruding structure have the effect of being easy to manufacture.

[0018] Among them, the protruding structure is arranged between the maximum outer diameter of the shaft center and the outer edge of the shaft center seat. In this way, the protruding structure can be arranged at an appropriate position on the lower surface of the shaft center seat to achieve the effect of being easy to embed into the base during the resistance welding process.

[0019] Among them, the protruding structure is arranged between the maximum outer diameter of the shaft center and a midpoint, and the midpoint is the radial midpoint between the maximum outer diameter of the shaft center and the outer edge of the shaft center seat. In this way, the protruding structure can be arranged at an inner position in the circumferential direction on the lower surface of the shaft center seat. In addition to achieving the effect of being easy to embed into the base during the resistance welding process, it can also reduce the metal materials of the shaft center seat or the base from splashing out of the range where the shaft center seat and the base are fixedly connected during the resistance welding process.

[0020] Among them, the thickness of the shaft center seat is not less than the thickness of the base. In this way, the shaft center seat has a certain thickness, and it can be easily embedded into the base through the protruding structure.

[0021] Among them, the thickness of the shaft center seat is not more than 3 mm. In this way, by making the shaft center seat have a certain range of thickness, the shaft center module and its overall configuration are particularly suitable for applications in miniaturized structures, and through the configuration of the protruding structure, the effect of being easy to embed into the base in the miniaturized structure can be achieved.

[0022] The motor device of the present utility model has the shaft center module as described above, and further includes: a base into which the protruding structure of the shaft center seat is embedded; a motor rotor rotatably sleeved on the shaft center; and a motor stator arranged corresponding to the motor rotor for driving the rotation of the motor rotor.

[0023] Therefore, in the motor device of the present utility model, by embedding the protruding structure of the shaft seat in the shaft center module into the base, the anti-torsion ability and stability of the combination between the shaft seat and the base can be improved, thereby achieving the effect of enhancing the fixing strength of the shaft center, and achieving the effect of enabling the motor rotor to operate smoothly.

[0024] Wherein, the motor rotor has a bearing, and the motor rotor is rotatably sleeved on the shaft center through the bearing. In this way, by using the bearing, the smoothness of the motor rotor during operation can be improved.

[0025] Wherein, the hardness of the bearing is less than the hardness of the shaft seat. In this way, the wear resistance of the shaft seat can be improved, thereby achieving the effect of ensuring the fixing strength of the shaft center.

[0026] Wherein, the bearing is made of plastic, copper or aluminum. In this way, based on the fact that the hardness of the bearing is less than the hardness of the shaft seat and the material of the bearing is easy to obtain, the bearing of the present utility model has the effect of being easy to manufacture.

[0027] Wherein, the motor device further includes an upper snap ring sleeved on one end of the shaft center relative to the shaft seat. In this way, through the configuration of the upper snap ring, the axial displacement of the bearing and the motor rotor can be restricted, and the smoothness of the pump device during operation can be improved.

[0028] Wherein, the motor device further includes a housing fixed to the base, and the shaft center module is arranged between the housing and the base. In this way, through the configuration of the housing and the base, the shaft center module can be stably arranged in the motor device, thereby improving the smoothness of the motor rotor during operation.

[0029] Wherein, the thickness of the motor device is not greater than 20 mm. In this way, by making the motor device have a certain range of thickness, the motor device and its overall configuration are particularly suitable for applications in miniaturized structures; and through the configuration of the protruding structure of the shaft seat, the effect of being easy to embed in the base in the miniaturized structure can be achieved.

[0030] The pump device of the present utility model has the above-mentioned motor device. Wherein, the motor rotor has several blades extending radially, so as to drive fluid to flow in from an inlet and flow out from an outlet when the motor rotor rotates.

[0031] Therefore, in the pump device of the present utility model, by embedding the protruding structure of the shaft seat in the shaft center module into the base, the anti-torsion ability and stability of the combination between the shaft seat and the base can be improved, the fixing strength of the shaft center can be enhanced, the smoothness of the motor rotor operation can be improved, and thereby the effect of improving the smoothness and service life of the overall pump device operation can be achieved.

[0032] Among them, the thickness of the pump device is not greater than 20 mm. In this way, by making the pump device have a certain range of thickness, the pump device and its overall configuration are particularly suitable for applications in miniaturized structures; and through the configuration of the protruding structure of the shaft center seat, the effect of being easily embedded in the base in the miniaturized structure can be achieved. Description of the Drawings

[0033] Figure 1 : Partial enlarged sectional schematic view of the combined structure among the shaft center, shaft center seat and base of the shaft center module of the prior art;

[0034] Figure 2 : As Figure 1 Shown is the cross-sectional metallographic diagram of the shaft center module of the prior art after resistance welding to combine the shaft center seat and the base;

[0035] Figure 3 : Exploded perspective view of the motor device or pump device respectively formed by the shaft center module of the present invention in combination with the motor module or pump module;

[0036] Figure 4 : As Figure 3 Shown is the exploded perspective view of the shaft center module of the present invention;

[0037] Figure 5 : As Figure 4 Shown is the partial enlarged sectional schematic view of the combination of the shaft center and the shaft center seat of the shaft center module of the present invention;

[0038] Figure 6 : As Figure 5 Shown is the sectional schematic view of the combination of the shaft center seat and the base of the shaft center module of the present invention;

[0039] Figure 7 : As Figure 6 Shown is the cross-sectional metallographic diagram of the shaft center module of the present invention after resistance welding to combine the shaft center seat and the base;

[0040] Figure 8 : As Figure 3 Shown is the sectional schematic view of the motor device or pump device of the present invention;

[0041] Figure 9 : Three-dimensional schematic view of the protruding structure of the shaft center seat of the shaft center module of the present invention with a multi-segment configuration;

[0042] Figure 10 : Three-dimensional sectional schematic view of the protruding structure of the shaft center seat of the shaft center module of the present invention with an arc-shaped cross-section;

[0043] Figure 11 : Three-dimensional sectional schematic view of the protruding structure of the shaft center seat of the shaft center module of the present invention with a rectangular cross-section.

[0044] Description of the reference numerals:

[0045] ﹝This utility model﹞

[0046] 1: Axis

[0047] 1a: Top

[0048] 1b: Bottom

[0049] 11: Top protruding part

[0050] 12: Bottom protruding part

[0051] 2: Axis seat

[0052] 2a: Upper surface

[0053] 2b: Lower surface

[0054] 20: Recessed part

[0055] 21: Protruding structure

[0056] 3: Base

[0057] 4: Motor rotor

[0058] 41: Bearing

[0059] 5: Motor stator

[0060] 6: Upper snap ring

[0061] 7: Housing

[0062] B: Blade

[0063] P I : Inlet

[0064] P O : Outlet

[0065] W: Ring wall

[0066] ﹝Existing﹞

[0067] 91: Axis

[0068] 92: Axis seat

[0069] 93: Base. Detailed implementation manners

[0070] To make the above and other objects, features, and advantages of this utility model more obvious and understandable, the following specifically presents the preferred embodiments of this utility model and, in conjunction with the accompanying drawings, makes the following detailed description:

[0071] Please refer to Figure 3As shown, it is an exploded perspective view of the axis module of the present utility model optionally combined with a motor module or a pump module. The axis module includes an axis 1 and an axis seat 2, and the axis 1 is fixedly connected to the axis seat 2, or the axis 1 and the axis seat 2 are integrally formed. The axis seat 2 is used to be fixedly connected to a base 3; the base 3 can be a part of any device or component for installing the axis module.

[0072] Optionally, when the axis module is combined with a motor module to form a motor device, the motor module includes a base 3, a motor rotor 4, a motor stator 5, an optional upper snap ring 6 and an optional housing 7. The axis seat 2 is fixedly connected to the base 3. The motor rotor 4 is rotatably sleeved on the axis 1; preferably, the motor rotor 4 has a bearing 41, and the motor rotor 4 can be rotatably sleeved on the axis 1 through the bearing 41 to improve the smoothness of the rotation of the motor rotor 4. The motor stator 5 is arranged corresponding to the motor rotor 4 for driving the rotation of the motor rotor 4. Optionally, the upper snap ring 6 is sleeved on one end of the axis 1 relative to the axis seat 2 to limit the axial displacement of the motor rotor 4. Optionally, the housing 7 is fixed to the base 3 so that the axis module is arranged between the housing 7 and the base 3. In the present utility model Figure 3 , the motor stator 5 is arranged between the housing 7 and the base 3; however, in other examples, the motor stator 5 can be arranged outside the housing 7 and the base 3.

[0073] Optionally, when the axis module is combined with a pump module to form a pump device, the pump module has the above-mentioned motor module. In particular, the motor rotor 4 further has several blades B extending radially to drive the flow of fluid when rotating. Optionally, a ring wall W is arranged between the base 3 and the housing 7; the ring wall W can be integrally formed with the base 3 or the housing 7, or can be fixedly connected between the base 3 and the housing 7. Preferably, the pump module has an inlet P I and an outlet P O . When the motor rotor 4 rotates, the several blades B drive the fluid in the environment to flow in from the inlet P I and flow out from the outlet P O . In the present utility model Figure 3 , the inlet P I is arranged on the housing 7, and the outlet P O is arranged on the ring wall W; however, in other examples, the inlet P I and the outlet P O can be arranged on the base 3, the housing 7 or the ring wall W according to requirements.

[0074] It should be particularly noted that the axis module of the present utility model is preferably applied within a specific size range. The specific size range means that the thickness of the axis base 2 is not less than the thickness of the base 3, and the axis base 2 is not greater than 3 mm. Additionally, the overall thickness of the motor device or the pump device is not greater than 20 mm.

[0075] In addition to Figure 3 this, please also refer to Figures 4 to 7 , Figure 4 which shows an exploded perspective view of the axis 1, the axis base 2, and the base 3 before being fixedly connected; Figure 5 shows a cross-sectional view of the configuration where the axis 1 and the axis base 2 are fixedly connected, and the axis base 2 is to be fixedly connected to the base 3; Figure 6 shows a cross-sectional view of the axis base 2 and the base 3 forming a fixed connection, especially by means of resistance welding; Figure 7 shows Figure 6 the metallographic diagram corresponding to the state of using resistance welding in . The axis 1 has a body extending along an axial direction, especially in a cylindrical shape; the axis 1 has a relative top end 1a and a bottom end 1b; optionally, the top end 1a has a top protrusion 11 and / or the bottom end 1b has a bottom protrusion 12.

[0076] The axis base 2 can be in a disc shape; preferably, the outer diameter of the axis base 2 is greater than the outer diameter of the axis 1. The axis base 2 has a relative upper surface 2a and a lower surface 2b; optionally, the axis base 2 has a recess 20 recessed from the upper surface 2a towards the lower surface 2b; in the drawings of the present utility model, the recess 20 forms a through hole; however, in other examples, the recess 20 can be a blind hole or a groove; or, in the example where the axis 1 and the axis base 2 are integrally formed, the recess 20 does not exist. Additionally, the axis base 2 has a protruding structure 21 protruding from the lower surface 2b away from the upper surface 2a; the protruding structure 21 especially presents an annular shape. Optionally, the number of the protruding structures 21 is at least two (not shown) and is respectively arranged at different radial positions in the circumferential direction of the lower surface 2b.

[0077] Specifically, the protruding structure 21 is arranged between the maximum outer diameter of the axis 1 and the outer edge of the axis base 2; preferably, in each radial direction, the protruding structure 21 is arranged between the maximum outer diameter of the axis 1 and a midpoint, and the midpoint is the midpoint in the radial direction between the maximum outer diameter of the axis 1 and the outer edge of the axis base 2.

[0078] In the present utility model Figures 3 to 7In this case, the shaft center 1 is combined with the recessed portion 20 of the shaft center seat 2 through the bottom protruding portion 12 to form a fixed configuration; the realization of the fixed connection can be achieved through the tight fit combination or welding combination of the bottom protruding portion 12 and the recessed portion 20, but the present utility model is not limited to the above fixed connection methods; for example, in the state where the shaft center 1 and the shaft center seat 2 are fixedly connected, the shaft center 1 and the shaft center seat 2 can be integrally formed (as Figure 9 shown).

[0079] In particular, as Figures 5 to 7 shown, it shows the state where the shaft center 1 and the shaft center seat 2 are fixedly connected or integrally formed, and the shaft center seat 2 together with the shaft center 1 is fixedly connected to the base 3; the shaft center seat 2 contacts the base 3 through the protruding structure 21, and then the protruding structure 21 of the shaft center seat 2 is embedded into the base 3 by using resistance welding (as Figure 6 , Figure 7 shown); preferably, the cross-section of the protruding structure 21 is in a triangular shape, for example. Thus, compared with Figures 1 to 2 the result of resistance welding between the shaft center seat 92 and the base 93 in the prior art with flat surfaces respectively, the result of resistance welding in the present utility model will make the protruding structure 21 of the shaft center seat 2 easy to be embedded into the base 3, and further make the bonding area between the shaft center seat 2 and the base 3 larger; and through the embedding / biting of the protruding structure 21 into the base 3 in the axial direction (depth direction), the anti-torsion ability and stability of the connection between the shaft center seat 2 and the base 3 can be improved, and further the fixing strength of the shaft center 1 can be improved.

[0080] In particular, the shaft center seat 2 and the base 3 are made of metal. Preferably, the melting point temperature of the shaft center seat 2 is higher than that of the base 3, so that the protruding structure 21 of the shaft center seat 2 can be easily embedded into the base 3 during the process of resistance welding. Preferably, the base 3 can be made of copper (including copper alloys) or aluminum (including aluminum alloys). Optionally, the materials of the shaft center 1 and the shaft center seat 2 are the same, and particularly can be made of steel.

[0081] Based on the structure of the shaft center module of the present utility model, Figure 8 it shows an assembly sectional view of a motor device or a pump device formed by the shaft center module of the present utility model in combination with a motor module or a pump module. In particular, during the rotation of the motor rotor 4, the bearing 41 may contact the shaft center seat 2, so that the shaft center seat 2 can serve as a friction plate for the bearing 41; preferably, the hardness of the bearing 41 is less than that of the shaft center seat 2 to improve the wear resistance of the shaft center seat 2, and further ensure the fixing strength of the shaft center 1; preferably, the bearing 41 can be made of plastic, copper or aluminum; however, in the present utility model, it is not limited to the hardness of the bearing 41 being less than that of the shaft center seat 2, and the bearing 41 can also be made of ceramic.

[0082] Please refer to Figure 9 as shown, which shows another configuration example of the protruding structure 21. The spindle base 2 has a plurality of protruding structures 21; preferably, the protruding structures 21 are configured to be separated from each other, and particularly present an annular shape as a whole; however, the present invention is not limited thereto. In addition, Figure 9 it can also be shown that the spindle 1 and the spindle base 2 can be in a fixedly connected state formed by integral molding, or the recess 20 (not shown) of the spindle base 2 is in the form of a blind hole.

[0083] Please refer to Figure 10 as shown, which shows another configuration example of the protruding structure 21. The cross-section of the protruding structure 21 is, for example, in an arc shape and can optionally be a semi-circular shape.

[0084] Please refer to Figure 11 as shown, which shows another configuration example of the protruding structure 21. The cross-section of the protruding structure 21 is, for example, in a rectangular shape.

[0085] It should be noted that although in the present invention Figure 4 , Figure 10 and Figure 11 the cross-sectional shapes of the protruding structure 21 are respectively triangular, arc-shaped and rectangular, the cross-sectional shape of the protruding structure 21 of the present invention is not limited thereto, and preferably the cross-sectional shape of the protruding structure 21 has a tip structure to facilitate the welding efficiency during the resistance welding process.

[0086] It should be noted that the spindle module of the present invention can be simply paired with a corresponding motor rotor and motor stator for application as a micro motor device, or based on the aforementioned micro motor, it can be further paired with corresponding blades, an inlet port and an outlet port for application as a micro pump device. Among them, although only the application as a "pump device" is mentioned in the present invention, based on the similarity between "pump" and "fan", the present invention also includes the configuration for application as a fan device.

[0087] In summary, for the spindle module and the pump device of the present invention, through the structure in which the protruding structure of the spindle base is embedded in the base, the anti-torsion ability and stability of the combination between the spindle base and the base can be improved, thereby improving the fixing strength of the spindle. In addition, since the melting point of the spindle base is higher than that of the base, the protruding structure is easily embedded in the base. In addition, since the hardness of the bearing is less than that of the spindle base, the wear resistance of the spindle base can be improved.

Claims

1. An axis module, characterized in that, Comprising: A shaft center; and A shaft center seat having an upper surface and a lower surface; the shaft center seat has a protruding structure protruding from the lower surface away from the upper surface; the shaft center is fixed to the shaft center seat, or the shaft center and the shaft center seat are integrally formed; the protruding structure of the shaft center seat is used to embed a base, so that the shaft center module is fixed to the base.

2. The shaft center module according to claim 1, characterized in that, The number of the protruding structures is at least two, and they are respectively arranged at different radial positions in the circumferential direction of the lower surface.

3. The shaft center module according to claim 1, wherein The protruding structure is annular; the annulus is formed by one protruding structure, or by a plurality of protruding structures separated from each other.

4. The shaft center module according to claim 1, wherein The cross section of the protruding structure is triangular, arc-shaped or rectangular.

5. The shaft center module according to claim 1, characterized in that, The protruding structure is arranged between the maximum outer diameter of the shaft center and the outer edge of the shaft center seat.

6. The shaft center module according to claim 5, wherein In each radial direction, the protruding structure is arranged between the maximum outer diameter of the shaft center and a middle point, and the middle point is the middle point in the radial direction between the maximum outer diameter of the shaft center and the outer edge of the shaft center seat.

7. The shaft center module according to claim 1, wherein The thickness of the shaft center seat is not less than the thickness of the base.

8. The shaft center module according to claim 7, wherein The thickness of the shaft center seat is not more than 3 mm.

9. A motor device having an axis module as described in any one of claims 1 to 8, characterized in that, further Comprising: A base, into which the protruding structure of the shaft center seat is embedded; A motor rotor rotatably sleeved on the shaft center; and A motor stator arranged corresponding to the motor rotor for driving the rotation of the motor rotor.

10. The motor device according to claim 9, characterized in that, The motor rotor has a bearing, and the motor rotor is rotatably sleeved on the shaft center through the bearing.

11. The motor device according to claim 9, characterized in that, Further comprising an upper snap ring sleeved on one end of the shaft center relative to the shaft center seat.

12. The motor device according to any one of claims 9 to 11, characterized in that, Further comprising a housing fixed to the base, and the shaft center module is arranged between the housing and the base.

13. The motor device according to claim 12, wherein The thickness of the motor device is not more than 20 mm.

14. A pump device having a motor device as claimed in claim 12, characterized in that, The motor rotor has several blades extending radially, so as to drive a fluid to flow in from an inlet and flow out from an outlet when the motor rotor rotates through the several blades.

15. The pump device according to claim 14, characterized in that, The thickness of the pump device is not more than 20 mm.

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